DETERIORATION DIAGNOSTIC DEVICE OF LEAD BATTERY

• Main Authors: KUROSAKA DAIKI, WATANABE HIDEMITSU
• Format: Patent
• Language: English; Japanese
• Published: 20.06.2016
• Subjects: BASIC ELECTRIC ELEMENTS; CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTINGELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRICITY; GENERATION; MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSIONOF CHEMICAL INTO ELECTRICAL ENERGY; SYSTEMS FOR STORING ELECTRIC ENERGY; TESTING

PROBLEM TO BE SOLVED: To exchange only a lead battery determined to be deteriorated by individually determining deterioration of a plurality of lead batteries connected in series.SOLUTION: A deterioration diagnostic device of a lead battery connecting a plurality of lead batteries (24) in series and diagnosing a capacitance deterioration of the plurality of batteries includes: current detection means (22) for detecting a common current flowing from the plurality of lead batteries; voltage detection means (21) for detecting the voltage applied from the plurality of lead batteries, respectively; inner resistance calculation means (65) for calculating an inner resistance from the plurality of lead batteries, respectively; and determination means (65) for individually determining the deterioration of the plurality of lead batteries from the inner resistance calculated by the inner resistance calculation means.SELECTED DRAWING: Figure 1 【課題】直列接続された複数の鉛バッテリをそれぞれ個別に劣化判定することで、劣化していると認められた鉛バッテリのみを交換可能とする。【解決手段】複数の鉛バッテリ（２４）を直列に接続し、複数の鉛バッテリの容量劣化を診断する鉛バッテリの劣化診断装置であって、複数の鉛バッテリより流れる共通の電流を検出する電流検出手段（２２）と、複数の鉛バッテリそれぞれから印加される電圧を検出する電圧検出手段（２１）と、検出された電流及び電圧から、複数の鉛バッテリのそれぞれの内部抵抗を算出する内部抵抗算出手段（６５）と、内部抵抗算出手段により算出された内部抵抗から複数の鉛バッテリの劣化を個別に判定する判定手段（６５）と、を備えることを特徴とする鉛バッテリの劣化診断装置。【選択図】 図１